18EE647 SENSORS AND TRANSDUCERS syllabus for EE

Strain and Pressure:

Mechanical strain, Interferometry, Fibre optic methods, pressure gauges, low gas pressures, Ionization gauges, Transducer use.

Position, direction, distance, and motion:

Position, Direction, Distance measurement, Distance travelled, Accelerometer systems, Rotation.

Light and associated radiation:

Nature of light, Colour temperature, Light flux, Photosensors, Photoresistors and photoconductors, Photodiodes, Phototransistors, Photovoltaic devices, Fibre – optic applications, Light transducers, Solid-state transducers, Liquid crystal displays (LCD), Light valves, Image transducers, Radio waves.

Temperature sensors and thermal transducers:

Heat and temperature, The bimetallic strip, Liquid and gas expansion, Thermocouples, Metal – resistance sensors, Thermistors, Radiant heat energy sensing, Pyroelectric detectors, Thermal transducers, Thermal to electrical transducers.

Sound, infrasound and ultrasound:

Principles, Audio electrical sensors and transducers, Electrical to audio transducers.

Solids, liquids and gases:

Mass and volume, Electronic sensors, Proximity detectors, Liquid levels, Liquid flow sensors, Timing, Gases, Viscosity.

Environmental Sensors:

Environmental quantities, Time, Moisture, Acidity/alkalinity, Wind chill, Radioactive count rate, Surveying and security, Animal fat thickness, Water purity, Air purity, Smoke and fire detectors, Building acoustics.

Course Outcomes:

At the end of the course the student will be able to:

• Use gauges and transducers to measure pressure, direction and distance.
• Discuss the use of light transducers and other devices used for the measurement of electromagnetic radiations.
• Explain the working of different temperature sensing devices.
• Discuss the principles and applications of audio electrical sensors and transducers used for the measurement of sound.
• Discuss the use of sensors for the measurement of mass, volume and environmental quantities.

Question paper pattern:

• The question paper will have ten full questions carrying equal marks.
• Each full question will be for 20 marks.
• There will be two full questions (with a maximum of four sub- questions) from each module.
• Each full question will have sub- question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbook

1 Sensors and Transducers Ian R. Sinclair Newnes 3 rd Edition, 2001